From 4266129964b8238526936d723de65b419d8069c6 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 31 May 2011 16:27:44 -0300 Subject: [media] DocBook: Move all media docbook stuff into its own directory This patch addresses several issues pointed by Randy Dunlap at changeset ece722c: - In the generated index.html file, "media" is listed first, but it should be listed in alphabetical order, not first. - The generated files are (hidden) in .tmpmedia/ - The link from the top-level index.html file to "media" is to media/index.html, but the file is actually in .tmpmedia/media/index.html - Please build docs with and without using "O=builddir" and test that. - Would it be possible for media to have its own Makefile instead of merging into this one? Due to the way cleandocs target works, I had to rename the media DocBook to media_api, otherwise cleandocs would remove the /media directory. Thanks-to: Randy Dunlap Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/pixfmt-nv16.xml | 174 ++++++++++++++++++++++++ 1 file changed, 174 insertions(+) create mode 100644 Documentation/DocBook/media/v4l/pixfmt-nv16.xml (limited to 'Documentation/DocBook/media/v4l/pixfmt-nv16.xml') diff --git a/Documentation/DocBook/media/v4l/pixfmt-nv16.xml b/Documentation/DocBook/media/v4l/pixfmt-nv16.xml new file mode 100644 index 000000000000..26094035fc04 --- /dev/null +++ b/Documentation/DocBook/media/v4l/pixfmt-nv16.xml @@ -0,0 +1,174 @@ + + + V4L2_PIX_FMT_NV16 ('NV16'), V4L2_PIX_FMT_NV61 ('NV61') + &manvol; + + + V4L2_PIX_FMT_NV16 + V4L2_PIX_FMT_NV61 + Formats with ½ horizontal +chroma resolution, also known as YUV 4:2:2. One luminance and one +chrominance plane with alternating chroma samples as opposed to +V4L2_PIX_FMT_YVU420 + + + Description + + These are two-plane versions of the YUV 4:2:2 format. +The three components are separated into two sub-images or planes. The +Y plane is first. The Y plane has one byte per pixel. For +V4L2_PIX_FMT_NV16, a combined CbCr plane +immediately follows the Y plane in memory. The CbCr plane is the same +width and height, in bytes, as the Y plane (and of the image). +Each CbCr pair belongs to two pixels. For example, +Cb0/Cr0 belongs to +Y'00, Y'01. +V4L2_PIX_FMT_NV61 is the same except the Cb and +Cr bytes are swapped, the CrCb plane starts with a Cr byte. + + If the Y plane has pad bytes after each row, then the +CbCr plane has as many pad bytes after its rows. + + + <constant>V4L2_PIX_FMT_NV16</constant> 4 × 4 +pixel image + + + Byte Order. + Each cell is one byte. + + + + + + start + 0: + Y'00 + Y'01 + Y'02 + Y'03 + + + start + 4: + Y'10 + Y'11 + Y'12 + Y'13 + + + start + 8: + Y'20 + Y'21 + Y'22 + Y'23 + + + start + 12: + Y'30 + Y'31 + Y'32 + Y'33 + + + start + 16: + Cb00 + Cr00 + Cb01 + Cr01 + + + start + 20: + Cb10 + Cr10 + Cb11 + Cr11 + + + start + 24: + Cb20 + Cr20 + Cb21 + Cr21 + + + start + 28: + Cb30 + Cr30 + Cb31 + Cr31 + + + + + + + + + Color Sample Location. + + + + + + + 01 + 23 + + + 0 + YY + YY + + + + C + C + + + 1 + YY + YY + + + + C + C + + + + + + 2 + YY + YY + + + + C + C + + + 3 + YY + YY + + + + C + C + + + + + + + + + + + -- cgit v1.2.1